Home / 989-1,910

Finding the Third Proportional to 989 and 1,910

Calculator

Solution

The third proportional to 989 and 1,910 is: 3,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    989 : 1,910 = 1,910 : x
  2. Step 2: Convert to fraction form
    989/1,910 = 1,910/x
  3. Step 3: Cross multiply
    989x = 1,910 × 1,910
  4. Step 4: Simplify right side
    989x = 3,648,100
  5. Step 5: Solve for x
    x = 3,648,100/989
  6. Step 6: Final answer
    x = 3,688.68

Related Problems

Find third proportional to 494.50 and 955
Half scale
Find third proportional to 1,978 and 3,820
Double scale
Find third proportional to 991 and 1,914
Similar ratio
Find third proportional to 1,483.50 and 2,865
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.93) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.